speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time.

Charts Compare Measurement runs Embed a score

prestanda.co.uk

https://www.prestanda.co.uk/

99 100 96 100 ✓AXE –CWV

Ranks Overall #333 Built Awesome #271

Data from Sep 7, 2026, 8:58 AM UTC old Measured once a week · 3 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Scoring Calculator · Wayback Machine

Stack

Netlify Hosted by Netlify

Lighthouse Scores

99
Performance
no change
100
Accessibility
no change
96
Best Practices
no change
100
SEO
no change

Metrics Lighthouse, mobile

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Lighthouse
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 2.05 s good ↑ +15 ms (+0.7%) 2.04 s – 2.19 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0.047 good → no change 0.047 – 0.085
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 926 ms good ↓ -135 ms (-12.7%) 926 ms – 1.06 s
Speed Index 926 ms good ↓ -135 ms (-12.7%) 926 ms – 1.47 s
TTFB Time to First Byte 626 ms good ↑ +15 ms (+2.5%) 611 ms – 766 ms

LCP Subparts lab observed, unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is throttled.

resource load duration 297 ms
element render delay 38 ms
time to first byte 28 ms
resource load delay 9 ms

Page weight

Metric Value Change / range Trend
Page Weight 172 kB ↑ +494 B (+0.3%) 172 kB – 173 kB
Requests 16 → no change 16 – 16
Third-party Weight 3.2 kB ↓ -2 B (-0.1%) 3.2 kB – 3.2 kB
Third-party CPU 2 ms ↓ -1 ms (-21.4%) 2 ms – 3 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

  • image 44.9% 77.4 kB · 5 req
  • font 43.8% 75.5 kB · 7 req
  • document 8.2% 14.1 kB · 1 req
  • script 1.6% 2.8 kB · 1 req
  • stylesheet 1% 1.8 kB · 1 req
  • other 0.6% 972 B · 1 req

Third parties 1 entities

3.2 kB transferred, 2 ms on the main thread.

Fathom Analytics script 3.2 kB · 2 ms CPU

Page health

Metric Value Change / range Trend
Main Thread Work 705 ms ↑ +52 ms (+7.9%) significant 653 ms – 705 ms
Long Tasks 0 ↓ -1 (-100%) 0 – 1
DOM Elements 194 → no change 194 – 194
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 0
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

other 363 ms
style layout 204 ms
paint composite render 99 ms
script evaluation 20 ms
parse HTML 16 ms
script parse compile 2 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 336 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 3 console errors

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 7, 2026, 8:58 AM UTC 99 2.05 s 0.047 0 ms 172 kB 3/3 ±8 2,470 0% 25s Wayback
Aug 31, 2026, 3:53 AM UTC 99 2.04 s 0.047 0 ms 172 kB 3/3 ±2 2,399 -3% 24s Wayback
Aug 21, 2026, 1:49 PM UTC 97 2.19 s 0.085 0 ms 173 kB 3/3 ±2 2,468 -1% 30.9s Wayback

Embed this score

Use this web component to show prestanda.co.uk's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://www.prestanda.co.uk/"></speedlify2-score>